Number of tilings of a 5 X 2n rectangle using 2n pentominoes of shapes N, Y.

A248102

Number of tilings of a 5 X 2n rectangle using 2n pentominoes of shapes N, Y.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =18a(4) =24a(5) =238a(6) =842a(7) =4360a(8) =25900a(9) =112178a(10) =613140a(11) =2941170a(12) =14789274a(13) =74895336a(14) =369603312a(15) =1866863986a(16) =9294391952a(17) =46543456838a(18) =233028690018

External references